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Re: Failing Malloc

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On 09/13/12 10:57 AM, James Kuyper wrote:
> On 09/12/2012 06:28 PM, Ian Collins wrote:
> ....
>> I understand your pain.  I use a similar approach to resource allocation
>> failures to yours in C++ with exceptions that convey file and line
>> number information from the call site.  These can ether propagate up or
>> be caught and augmented and re-thrown higher up the stack.  I guess I
>> haven't done anything similar in C because it takes more work and lot
>> more discipline!
>
> On my new task, I'm actually using C++, and I've been trying to figure
> out how to make use of exceptions to produce the same kind of error
> output I get from the my C programs. It's a fantasy, since the new group
> I'm working with has it's own well-entrenched error handling conventions
> that would not mix well with my preferred style.
>
> However, when I did indulge that fantasy, I found that one key problem
> was that exceptions discard information about where they came from, as
> the call stack unwinds. Unless I catch and rethrow around every function
> call that could throw an exception (including the implicit function
> calls due to ctors, dtors, and operator overloads), it can't duplicate
> the information generated by my error messages.

I use the OS provided stack trace functions to build a stack trace to 
include in the exception, so there's no need to pick anything use up 
along the way.

-- 
Ian Collins

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Failing Malloc Eric <nospam@nospam.com> - 2012-09-12 20:07 +0000
  Re: Failing Malloc Xavier Roche <xroche@free.fr.NOSPAM.invalid> - 2012-09-12 22:12 +0200
    Re: Failing Malloc William Ahern <william@wilbur.25thandClement.com> - 2012-09-12 14:25 -0700
  Re: Failing Malloc Andrew Cooper <andrew@nospam.example.com> - 2012-09-12 21:21 +0100
    Re: Failing Malloc Eric <nospam@nospam.com> - 2012-09-12 20:34 +0000
      Re: Failing Malloc Paul N <gw7rib@aol.com> - 2012-09-12 13:46 -0700
        Re: Failing Malloc Eric <nospam@nospam.com> - 2012-09-13 20:21 +0000
          Re: Failing Malloc Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-09-13 17:31 -0400
          Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-13 17:57 -0400
      Re: Failing Malloc John Gordon <gordon@panix.com> - 2012-09-12 20:55 +0000
        Re: Failing Malloc William Ahern <william@wilbur.25thandClement.com> - 2012-09-12 14:33 -0700
        Re: Failing Malloc falk@rahul.net (Edward A. Falk) - 2012-09-13 22:43 +0000
      Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-12 17:37 -0400
      Re: Failing Malloc Johann Klammer <klammerj@NOSPAM.a1.net> - 2012-09-13 08:57 +0200
  Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-12 17:20 -0400
    Re: Failing Malloc Ian Collins <ian-news@hotmail.com> - 2012-09-13 09:27 +1200
      Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-12 17:56 -0400
        Re: Failing Malloc Ian Collins <ian-news@hotmail.com> - 2012-09-13 10:28 +1200
          Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-12 18:57 -0400
            Re: Failing Malloc William Ahern <william@wilbur.25thandClement.com> - 2012-09-12 16:21 -0700
            Re: Failing Malloc Ian Collins <ian-news@hotmail.com> - 2012-09-13 12:07 +1200
              Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-13 13:18 -0400
                Re: Failing Malloc Ian Collins <ian-news@hotmail.com> - 2012-09-14 07:37 +1200
                Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-13 16:05 -0400
                Re: Failing Malloc William Ahern <william@wilbur.25thandClement.com> - 2012-09-13 14:21 -0700
                Re: Failing Malloc James Kuyper <jameskuyper@verizon.net> - 2012-09-13 17:38 -0400
                Re: Failing Malloc William Ahern <william@wilbur.25thandClement.com> - 2012-09-13 14:03 -0700
                Re: Failing Malloc Ian Collins <ian-news@hotmail.com> - 2012-09-15 10:01 +1200
            Re: Failing Malloc Philip Lantz <prl@canterey.us> - 2012-09-14 02:50 -0700
  Re: Failing Malloc Kaz Kylheku <kaz@kylheku.com> - 2012-09-12 21:36 +0000
  Re: Failing Malloc Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-09-12 17:41 -0400
  Re: Failing Malloc Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2012-09-12 16:07 -0600
    Re: Failing Malloc "christian.bau" <christian.bau@cbau.wanadoo.co.uk> - 2012-09-12 16:03 -0700
  Re: Failing Malloc Kenneth Brody <kenbrody@spamcop.net> - 2012-09-12 19:24 -0400
  Re: Failing Malloc The Great Firewall of China Blue <chine.bleu@yahoo.com> - 2012-09-12 16:34 -0700
  Re: Failing Malloc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-09-13 00:14 -0700

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